As a team of elite U.S. commandos found themselves under unexpectedly heavy fire in a remote Yemeni village last month, eight time zones away, their commander in chief was not in the Situation Room.

It’s unclear what he, personally, was doing. But his Twitter account was busy promoting an upcoming appearance on the Christian Broadcasting Network.

“I will be interviewed by @TheBrodyFile on @CBNNews tonight at 11pm. Enjoy!” read a tweet from President Donald Trump’s personal account on Saturday, Jan. 28.

Whether it was Trump himself or an aide who sent out that tweet at 5:50 p.m. ― about half an hour into a firefight that cost a Navy SEAL his life ― cannot be determined from the actual tweets, and the White House isn’t saying. Likewise, it’s not clear who deleted the tweet some 20 minutes later, or why the new president, just a week on the job, chose not to directly monitor the first high-risk military operation on his watch.

The CBN interview did not actually air until the following night, Jan. 29, and Trump or an aide may have realized the error and deleted the tweet for that reason. Alternatively, Trump or an aide might have realized that the Yemen operation was going badly and deleted the tweet to avoid looking callous.